Lub zog yog lub hauv paus ntawm tib neeg txoj kev loj hlob, thiab inverters yog ib qho ntawm cov thev naus laus zis tseem ceeb rau kev tsim lub zog tshiab zog hloov dua siab tshiab. Hauv tsev neeg ntawm inverters, ib-theem inverters thiab peb-theem inverters yog ob tug tswv cuab tseem ceeb. Lawv txhua tus muaj lawv tus yam ntxwv thiab qhov zoo thiab qhov tsis zoo.
Lub tshuab hluav taws xob photovoltaic feem ntau muab faib ua ib-theem daim phiaj txuas hluav taws xob tsim hluav taws xob thiab peb-theem kab sib txuas hluav taws xob tsim hluav taws xob. Feem ntau hais lus, cov tshuab uas muaj tsawg dua 5KW feem ntau siv ib-theem daim phiaj sib txuas, thaum lub tshuab uas muaj ntau tshaj 5KW feem ntau siv peb-theem kab sib txuas. Yog li, dab tsi yog qhov txawv ntawm ib-theem inverters thiab peb-theem inverters, thiab sab twg koj sawv ntawm lawv txoj kev hlub ntxub entanglements?
Ua ntej peb pib, peb yuav tsum nkag siab tias 'theem' yog dab tsi. Nyob rau hauv lub hwj chim system, "theem" yog hais txog peb-theem nyob ntawm tej (A, B, C los yog L1 L2, L3), Transformers feem ntau tso tawm peb nyob ntawm tej thiab ib tug nruab nrab hlau (N hlau). Nco ntsoov tias "nyob xaim" ntawm no yog hais txog cov xaim uas muaj lub siab tam sim no thiab muaj peev xwm raug them, feem ntau yog siv rau kev xa hluav taws xob. Thiab qhov 'nruab nrab xaim' yog ib lub xaim txuas nrog hauv av kom rov qab tam sim no. Tsis tas li ntawd, qee qhov kev hloov pauv kuj tseem ua rau hauv av xaim (PE) kom ntseeg tau tias muaj kev nyab xeeb hauv av ntawm cov khoom siv thiab ntxiv kev ruaj ntseg ntawm tus kheej.
Ib-theem thiab peb-theem yog dab tsi?
Ib theem inverter hloov DC lub zog rau hauv AC lub zog tso zis, thiab ib-theem inverter hloov cov zis AC voltage rau ib-theem, xws li AC 220V lossis 230V.
Muaj peb lub qhov (socket) ntawm lub interface ntawm ib-theem inverter, sau tias "N", "L", thiab "PE" raws.
L sawv cev rau cov hlau nyob (cim nrog tsab ntawv 'L' Live Wire) nrog cov xaim liab lossis xim av.
N sawv cev rau cov xaim nruab nrab (cim nrog tsab ntawv 'N' Cov xaim nruab nrab) nrog cov kab xiav lossis dawb.
PE sawv cev rau hauv av xaim (cim nrog tsab ntawv 'E' Lub Ntiaj Teb) nrog cov kab daj thiab ntsuab alternating kab.
Peb-theem inverter hloov cov zis AC voltage rau peb theem, xws li AC 380V lossis 400V. Peb theem hluav taws xob yog tsim los ntawm peb lub peev xwm AC nrog tib zaus, sib npaug amplitude, thiab theem sib txawv ntawm 120 degree hauv ib ntus.
Lub interface ntawm peb-theem inverter muaj tsib qhov, xws li A, B, C, N, PE. Raws li lub teb chaws tus qauv GB7947-2010, nyob rau hauv peb-theem Circuit Court, A yog daj, B yog ntsuab, C yog liab, N sawv cev rau lub nruab nrab hlau, thiab xiav los yog dawb hlau yog siv; PE sawv ntsug rau hauv av xaim, siv cov kab daj thiab ntsuab hloov pauv. A. B thiab C theem qee zaum sawv cev li L1, L2, L3, lossis U, V, W.
Cias muab, nws yog ib tug 5- qhov interface nrog ib tug voltage theem ntawm 400V.
Tias yog vim li cas thaum txhim kho peb-theem inverters, cov npe xws li peb-theem plaub xaim thiab peb-theem tsib xaim feem ntau hnov.
Tom qab hais tias 'theem', cia peb tham txog 'kab'. Muaj ntau ntau hom:
Ib theem dual kab: ib txoj hlua nyob thiab ib qho nruab nrab hlau
Ib theem peb xaim: ib lub xaim nyob + ib lub xaim nruab nrab + ib xaim hauv av
Peb theem peb xaim (TT system): Peb nyob hlau, feem ntau yog rau kab saum 10KV
Peb theem plaub hlau (TN-C system): Peb nyob ntawm tej thiab ib tug nruab nrab hlau, feem ntau yog siv rau 380V / 220V (400V / 230V) low-voltage kab, nrog rau kev ua hauj lwm nruab nrab hlau N kuj pab raws li cov av tiv thaiv hlau PE, uas tuaj yeem raug hu ua kev tiv thaiv kab mob nruab nrab, sawv cev los ntawm NPE, haum rau cov chaw nres tsheb hluav taws xob nrog qhov sib npaug ntawm peb-theem loads.
Peb theem tsib xaim (TN-S system): lub zog siv hluav taws xob muaj peb lub xov hlau nyob, ib lub xov tooj nruab nrab, thiab ib lub hauv av xaim, uas nruj me ntsis cais cov haujlwm nruab nrab ntawm cov hlau N los ntawm kev tiv thaiv hlau PE. Nws yog siv rau hauv qhov chaw uas yuav tsum tau muaj kev nyab xeeb siab thiab cov khoom siv hluav taws xob yuav tsum tau siv hauv av.
Feem ntau, ib-theem kab sib txuas sib txuas inverters tau koom ua ke rau hauv ib-theem ob-xaim lossis ib-theem peb xaim hluav taws xob kab hluav taws xob.
Peb-theem daim phiaj txuas nrog inverter yog kev koom ua ke rau hauv peb-theem plaub xaim thiab peb-theem tsib xaim hluav taws xob daim phiaj kab.
Yuav xaiv li cas?
Pib los ntawm daim ntawv thov scenarios ntawm kev faib photovoltaics, txuam inverters thiab xaiv cov inverters haum raws li hauv zos tej yam kev mob yuav ua rau kom lawv cov hauj lwm zoo. Yuav ua li cas xaiv tus qauv tshwj xeeb? Kuv puas yuav tsum siv ib theem lossis peb theem?
Nws nyob ntawm lub peev xwm ntawm daim phiaj hluav taws xob thiab qhov system.
Rau lub ru tsev lossis lub tshav puam uas muaj peev xwm me me, ib-theem txoj hlua inverter feem ntau xaiv; Thaum lub ru tsev cheeb tsam loj, yog hais tias lub hwj chim daim phiaj muaj peb theem, nws yog pom zoo kom xaiv ib tug me me peb-theem inverter; Rau kev lag luam thiab kev lag luam ru tsev, complex roob roob thiab tsev cog khoom tej yaam num, loj peb-theem multi-channel MPPT hlua inverters feem ntau yog xaiv rau scenarios nrog irregular orientation, yooj yim tshwm sim ntawm lub zos ob leeg, loj ntsia muaj peev xwm, thiab ntau daim phiaj txuas voltages ntawm qis los yog nruab nrab. voltage; Rau cov chaw nres tsheb loj hauv av thiab suab puam, nws raug nquahu kom xaiv cov loj series lossis centralized inverters.